Giga Games 1/Giga Games.iso/net/usenet/volume1/rot

Text File | 1987-04-17 | 10.5 KB | 467 lines

Path: seismo!rutgers!mit-eddie!uw-beaver!tektronix!tekgen!tekred!games-request
From: [e-mail]
Newsgroups: mod.sources.games
Subject: v01i002:  rot - waterfall terminal display
Message-ID: <[e-mail]>
Date: 17 Apr 87 21:25:24 GMT
Sender: [e-mail]
Lines: 456
Approved: [e-mail]

Submitted by: seismo!ut-sally!shell!neuro1!hyd-ptd!peter
Mod.sources.games: Volume 1, Issue 2
Archive-name: rot

    [This was originally posted to net.bizarre back in July 1985.
     I have compiled and run this sucessfully on our 4.3bsd Vax
     and don't see any particular machine/os dependencies, other
     than requiring term{lib|cap}. -br ]

#! /bin/sh
# This is a shell archive.  Remove anything before this line, then unpack
# it by saving it into a file and typing "sh file".  To overwrite existing
# files, type "sh file -c".  You can also feed this as standard input via
# unshar, or by typing "sh <file", e.g..  If this archive is complete, you
# will see the following message at the end:
#        "End of shell archive."
# Contents:  README Makefile rot.c
# Wrapped by billr@tekred on Fri Apr 17 14:20:46 1987
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
if test -f README -a "${1}" != "-c" ; then
  echo shar: Will not over-write existing file \"README\"
else
echo shar: Extracting \"README\" \(455 characters\)
sed "s/^X//" >README <<'END_OF_README'
XThis program cascades letters from the top of the terminal screen
Xto the bottom in a waterfall effect.  There was a note in the
Xoriginal posting about this program not working on terminals that
Xrequire padding (PC is read but not used).  Also, this will be
Xpretty slow at lower baudrates.
X
X--
XOriginal source from:
X
X    Peter da Silva (ihnp4!shell!neuro1!{hyd-ptd,datafact,baylor}!peter)
X
XMakefile and README from:
X
X    Bill Randle ([e-mail])
END_OF_README
if test 455 -ne `wc -c <README`; then
    echo shar: \"README\" unpacked with wrong size!
fi
# end of overwriting check
fi
if test -f Makefile -a "${1}" != "-c" ; then
  echo shar: Will not over-write existing file \"Makefile\"
else
echo shar: Extracting \"Makefile\" \(99 characters\)
sed "s/^X//" >Makefile <<'END_OF_Makefile'
X# Simple makefile for rot program
X
Xrot:    rot.c
X    cc -O -o rot rot.c -ltermlib
X
Xtest:    rot
X    rot <rot.c
END_OF_Makefile
if test 99 -ne `wc -c <Makefile`; then
    echo shar: \"Makefile\" unpacked with wrong size!
fi
# end of overwriting check
fi
if test -f rot.c -a "${1}" != "-c" ; then
  echo shar: Will not over-write existing file \"rot.c\"
else
echo shar: Extracting \"rot.c\" \(7528 characters\)
sed "s/^X//" >rot.c <<'END_OF_rot.c'
X#include <stdio.h>
X
X/*        -- Miscellaneous defines --                     */
X#define FALSE 0
X#define TRUE 1
X#define MAXCOL 80
X#define MAXLI 24
X
Xextern char *tgetstr();
X
Xint lastx, lasty;
Xstruct _c {
X    struct _c *c_next;
X    int c_line, c_column;
X    char c_mark;
X} *clist;
X
X/*        -- Global variables --                         */
Xchar *tent;                                               /* Pointer to tbuf */
Xchar *PC;                                                    /* Pad character */
Xchar *UP, *BC;                                /* Upline, backsapce character */
Xshort ospeed;                                       /* Terminal output speed */
Xint tglen;
X
Xchar *cm,                                                   /* Cursor motion */
X     *cl,                                                    /* Clear screen */
X     *ti,                            /* Init terminal */
X     *te;                           /* Reset terminal */
Xint  li,                                                  /* lines on screen */
X     co;                                                    /* columns ditto */
Xchar screen[MAXLI+1][MAXCOL];
Xchar newscreen[MAXLI+1][MAXCOL];
X
Xmain(ac, av)
Xint ac;
Xchar **av;
X{
X    srand(getpid());
X    tinit(getenv("TERM"));
X    if(av[1])
X        while(*++av)
X            dropf(*av);
X    else
X        fdropf(stdin);
X    tend();
X}
X
Xat(x, y, c)
Xint x, y;
Xchar c;
X{
X#ifdef DEBUG
X    _at(x, y);
X#else
X    if(y==lasty) {
X        if(x!=lastx) {
X            if(x<lastx && lastx-x<tglen)
X                while(x<lastx) {
X                    putchar('\b');
X                    lastx--;
X                }
X            else if(x>lastx && x-lastx<tglen)
X                while(x>lastx) {
X                    putchar(newscreen[lasty][lastx]);
X                    lastx++;
X                }
X            else
X                _at(x, y);
X        }
X    } else
X        _at(x, y);
X#endif
X    c &= ~0200;
X    putchar(c);
X    if(c >= ' ' && c != '\177')
X        lastx++;
X    if(lastx>=co) {
X        lastx -= co;
X        lasty++;
X    }
X}
X
X_at(x, y)
Xint x, y;
X{
X    outs(tgoto(cm, x, y));
X    lastx = x;
X    lasty = y;
X}
X
Xtinit(name)
Xchar *name;
X{
X    static char junkbuf[1024], *junkptr;
X    char tbuf[1024];
X    int  intr();
X
X    junkptr = junkbuf;
X
X    tgetent(tbuf, name);
X
X    PC = tgetstr("pc", &junkptr);
X    UP = tgetstr("up", &junkptr);
X    BC = tgetstr("bc", &junkptr);
X    cm = tgetstr("cm", &junkptr);
X    cl = tgetstr("cl", &junkptr);
X    ti = tgetstr("ti", &junkptr);
X    te = tgetstr("te", &junkptr);
X    li = min(tgetnum("li"), MAXLI);
X    co = min(tgetnum("co"), MAXCOL);
X    tglen = strlen(tgoto(co-1, li-1));
X}
X
Xtend()
X{
X    outs(te);
X    _at(0, li-1);
X    putchar('\n');
X    fflush(stdout);
X}
X
Xreadscreen(fp)
XFILE *fp;
X{
X    int line, column, p;
X    char tmp[256];
X
X    for(line=0; line<li; line++)
X        for(column=0; column<co; column++)
X            newscreen[line][column] = screen[line][column] = ' ';
X    for(column=0; column<co; column++)
X        newscreen[li][column] = screen[li][column] = '*';
X    line=0;
X    while(line<li) {
X        if(!fgets(tmp, 256, fp))
X            return;
X
X        for(column=0, p=0; tmp[p]; p++) {
X            tmp[p] &= ~0200;
X            if(tmp[p] < ' ' || tmp[p] == 127)
X                switch(tmp[p]) {
X                    case '\t':
X                        while(++column % 8)
X                            continue;
X                        break;
X                    case '\n':
X                        column = 0;
X                        line++;
X                        break;
X                    default:
X                        newscreen[line][column] = '^';
X                        column++;
X                        if(column>=co) {
X                            column -= co;
X                            line++;
X                        }
X                        newscreen[line][column] =
X                            (tmp[p]+'@') & 127;
X                        column++;
X                        break;
X                }
X            else {
X                newscreen[line][column] = tmp[p];
X                column++;
X            }
X            if(column >= co) {
X                column -= co;
X                line++;
X            }
X            if(line >= li)
X                break;
X        }
X    }
X    for(column=0; column<co; column++)
X        newscreen[line][column] = screen[li][column] = '*';
X}
X
Xdrawscreen()
X{
X    lastx = lasty = 0;
X    outs(cl);
X    update();
X}
X
Xupdate() /* copy new screen back to old screen */
X{
X    int l, c;
X
X    for(l=0; l<li; l++)
X        for(c=0; c<co; c++)
X            if(screen[l][c] != newscreen[l][c]) {
X                if((screen[l][c] & ~0200) !=
X                   (newscreen[l][c] & ~0200))
X                    at(c, l, newscreen[l][c]);
X                screen[l][c] = newscreen[l][c];
X            }
X}
X
Xdrop(line, column)
Xint line, column;
X{
X    struct _c *hold;
X
X    if(line<0 || line>=li || column<0 || column>=co ||
X       (line>=li-2 && column >= co-1) || /* scroll potential */
X       screen[line][column]==' ' || /* empty */
X       screen[line][column] & 0200) /* already in list */
X        return;
X    if(screen[line+1][column]!=' ' &&
X       (column==co-1 ||screen[line+1][column+1]!=' ') &&
X       (column==0 ||screen[line+1][column-1]!=' '))
X        return;
X
X    hold = (struct _c *) malloc(sizeof(struct _c));
X    hold -> c_next = clist;
X    hold -> c_column = column;
X    hold -> c_line = line;
X    hold -> c_mark = 0;
X    screen[line][column] |= 0200;
X    clist = hold;
X}
X
Xdrops()
X{
X    int l, c;
X    struct _c *hold;
X    for(hold = clist; hold; hold=hold->c_next) {
X        int line = hold->c_line, column=hold->c_column;
X        if(line>= li-2 && column>=co-1) {
X            newscreen[line][column] &= ~0200;
X            screen[line][column] &= ~0200;
X            hold->c_mark = 1;
X            continue;
X        }
X        drop(line+1, column);
X        drop(line, column+1);
X        drop(line-1, column);
X        drop(line, column-1);
X        if(newscreen[line+1][column]==' ') {
X            newscreen[line+1][column] = screen[line][column];
X            newscreen[line][column] = ' ';
X            line++;
X        } else if(rand()&01000) {
X            if(column>0 && newscreen[line][column-1] == ' ' &&
X                newscreen[line+1][column-1]==' ') {
X                newscreen[line][column-1] =
X                    screen[line][column];
X                newscreen[line][column] = ' ';
X                column--;
X            }
X            else if(column<co-1 &&
X                newscreen[line][column+1] == ' ' &&
X                newscreen[line+1][column+1]==' ') {
X                    newscreen[line][column+1] =
X                        screen[line][column];
X                    newscreen[line][column] = ' ';
X                    column++;
X            }
X            else {
X                screen[line][column] &= ~0200;
X                newscreen[line][column] &= ~0200;
X                hold -> c_mark = 1;
X            }
X        } else {
X            if(column<co-1 && newscreen[line][column+1] == ' ' &&
X                newscreen[line+1][column+1]==' ') {
X                newscreen[line][column+1] =
X                    screen[line][column];
X                newscreen[line][column] = ' ';
X                column++;
X            }
X            else if(column>0 && newscreen[line][column-1] == ' ' &&
X                newscreen[line+1][column-1]==' ') {
X                newscreen[line][column-1] =
X                    screen[line][column];
X                newscreen[line][column] = ' ';
X                column--;
X            }
X            else {
X                newscreen[line][column] &= ~0200;
X                screen[line][column] &= ~0200;
X                hold -> c_mark = 1;
X            }
X        }
X        hold -> c_column = column;
X        hold -> c_line = line;
X        fflush(stdout);
X    }
X
X    while(clist && clist->c_mark) {
X        struct _c *p = clist;
X        clist = clist -> c_next;
X        free(p);
X    }
X    hold = clist;
X    while(hold && hold->c_next)
X        if(hold->c_next->c_mark) {
X            struct _c *p = hold->c_next;
X            hold->c_next = p->c_next;
X            free(p);
X        } else
X            hold=hold->c_next;
X}
X
Xdroplet(line, column)
Xint line, column;
X{
X    int ret;
X    while(column>=0 && screen[line][column]!=' ')
X        column--;
X    column++;
X    while(column<co && screen[line][column]!=' ')
X        drop(line, column++);
X    ret = clist != 0;
X    while(clist) {
X        drops();
X        update();
X    }
X    return ret;
X}
X
Xdropscreen()
X{
X    int column, line;
X    int rubbish = 0, count = 0;
X
X    do {
X        int start, limit, incr;
X        count++;
X        rubbish = 0;
X        if(count&1) { start=li-2; limit=0; incr = -1; }
X        else { start=0; limit=li-2; incr=1; }
X        for(line=start; line!=limit && !rubbish; line+=incr) {
X            if(line&1)
X                for(column=0; column<co && !rubbish; column++)
X                    rubbish += droplet(line, column);
X            else
X                for(column=co-1; column>=0 && !rubbish; column--)
X                    rubbish += droplet(line, column);
X        }
X    } while(rubbish);
X}
X
Xdropf(file)
Xchar *file;
X{
X    FILE *fp;
X
X    if(!(fp = fopen(file, "r"))) {
X        perror(file);
X        return -1;
X    }
X    fdropf(fp);
X}
X
Xfdropf(fp)
XFILE *fp;
X{
X    int i;
X
X    while(!feof(fp)) {
X        readscreen(fp);
X        drawscreen();
X        for(i=0; i<20; i++)
X            droplet((rand()>>4) % li, (rand()>>4) % co);
X        dropscreen();
X    }
X}
X
Xouts(s)
Xchar *s;
X{
X    fputs(s, stdout);
X}
X
Xmin(a, b)
Xint a, b;
X{
X    if(a<b) return a;
X    return b;
X}
END_OF_rot.c
if test 7528 -ne `wc -c <rot.c`; then
    echo shar: \"rot.c\" unpacked with wrong size!
fi
# end of overwriting check
fi
echo shar: End of shell archive.
exit 0